scholarly journals Mechanical Alloying: Processing and Materials

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 798
Author(s):  
Joan-Josep Suñol
Keyword(s):  
Mechanical Alloying ◽  
Solid Solutions ◽  
Nanocrystalline Microstructure ◽  
Alloys And Compounds

Mechanical alloying is a technique involving the production of alloys and compounds, which permits the development of metastable materials (with amorphous or nanocrystalline microstructure) or the obtention of solid solutions with extended solubility [...]

Nanocrystalline FeNi solid solutions prepared by mechanical alloying

1996 ◽  
Vol 7 (4) ◽  
pp. 411-420 ◽  
Author(s):  
V. Hays ◽  
R. Marchand ◽  
G. Saindrenan ◽  
E. Gaffet
Keyword(s):  
Mechanical Alloying ◽  
Solid Solutions

scholarly journals Thermodynamic Analysis of the Formation of FCC and BCC Solid Solutions of Ti-Based Ternary Alloys by Mechanical Alloying

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 510 ◽  
Author(s):  
Claudio Aguilar ◽  
Carola Martinez ◽  
Karem Tello ◽  
Sergio Palma ◽  
Adeline Delonca ◽  
...  
Keyword(s):  
Free Energy ◽  
Mechanical Alloying ◽  
Gibbs Free Energy ◽  
Thermodynamic Analysis ◽  
Solid Solutions ◽  
Ternary Systems ◽  
Solubility Limit ◽  
Ternary Alloys ◽  
Energy Of Mixing ◽  
Free Energy Of Mixing

A thermodynamic analysis of the synthesis of face-centred cubic (fcc) and body-centred cubic (bcc) solid solutions of Ti-based alloys produced by mechanical alloying was performed. Four Ti-based alloys were analysed: (i) Ti-13Ta-3Sn (at.%), (ii) Ti-30Nb-13Ta (at.%), (iii) Ti-20Nb-30Ta (wt. %) and (iv) Ti-33Nb-4Mn (at.%). The milled powders were characterized by X-ray diffraction, and the crystallite size and microstrain were determined using the Rietveld and Williamson–Hall methods. The Gibbs free energy of mixing for the formation of a solid solution of the three ternary systems (Ti-Ta-Sn, Ti-Nb-Ta and Ti-Nb-Mn) was calculated using an extended Miedema’s model, applying the Materials Analysis Applying Thermodynamics (MAAT) software. The values of the activity of each component were determined by MAAT. It was found that increasing the density of crystalline defects, such as dislocations and crystallite boundaries, changed the solubility limit in these ternary systems. Therefore, at longer milling times, the Gibbs free energy increases, so there is a driving force to form solid solutions from elemental powders. Finally, there is agreement between experimental and thermodynamic data confirming the formation of solid solutions.

Mechanical Alloying of Interstitial Solid Solutions and Compounds

1996 ◽  
Vol 225-227 ◽  
pp. 409-416 ◽  
Author(s):  
Jacques Foct ◽  
R.S. de Figueiredo ◽  
O. Richard ◽  
J.P. Morniroli
Keyword(s):  
Mechanical Alloying ◽  
Solid Solutions

Supersaturated Cu–Li solid solutions produced by mechanical alloying

2006 ◽  
Vol 425 (1-2) ◽  
pp. 334-338 ◽  
Author(s):  
P.A. Rojas ◽  
A. Peñaloza ◽  
C.H. Wörner ◽  
R. Fernández ◽  
A. Zúñiga
Keyword(s):  
Mechanical Alloying ◽  
Solid Solutions

Structural analysis and magnetic properties of solid solutions of Co–Cr system obtained by mechanical alloying

2014 ◽  
Vol 354 ◽  
pp. 178-183 ◽  
Author(s):  
J.A. Betancourt-Cantera ◽  
F. Sánchez-De Jesús ◽  
A.M. Bolarín-Miró ◽  
I. Betancourt ◽  
G. Torres-Villaseñor
Keyword(s):  
Magnetic Properties ◽  
Structural Analysis ◽  
Mechanical Alloying ◽  
Solid Solutions ◽  
Cr System

Synthesis of Nanocrystalline Ag-Cu Supersaturated Solid Solution by Mechanical Alloying

2010 ◽  
Vol 92 ◽  
pp. 271-276 ◽  
Author(s):  
Liang Feng Li ◽  
Tai Qiu ◽  
Jian Yang ◽  
Yong Bao Feng
Keyword(s):  
Electron Microscopy ◽  
Solid Solution ◽  
Mechanical Alloying ◽  
Solid Solutions ◽  
Supersaturated Solid Solution ◽  
Main Peak ◽  
Rich Phase ◽  
Transmission Electron ◽  
Supersaturated Solid Solutions ◽  
Xrd Patterns

Nanocrystalline Ag-28Cu supersaturated solid solution is prepared by mechanical alloying (MA) using a planetary ball mill. The mechanical alloyed powders are characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM) and differential scanning calorimeter (DSC). XRD patterns show that the main peak of Ag-28Cu supersaturated solid solution exists at about 2θ=39° when the milling time is 30h. HRTEM images show that the grain sizes of as-prepared solid solutions have distributions from 10nm to 15nm. The interplanar spacing of (111) plane for fcc Ag-28Cu supersaturated solid solution is about 2.24Å. DSC measurement result indicates that the melting temperature of Ag-28Cu supersaturated solid solution is 783.8°C. The Ag(Cu) supersaturated solid solutions are in metastable state and they will be transformed into Ag-rich phase and Cu-rich phase simultaneously by annealing at 215°C- 415°C.

Sign in / Sign up

Export Citation Format

Share Document